This bug was filed from the Socorro interface and is report bp-93287a61-16a8-4eae-b5c7-4b1ac2150910. ============================================================= Crashing Thread Frame Module Signature Source 0 XUL -[ChildView keyDown:] widget/cocoa/nsChildView.mm Ø 1 AppKit AppKit@0x7cf0fa Ø 2 AppKit AppKit@0x160c85 3 XUL -[ToolbarWindow sendEvent:] widget/cocoa/nsCocoaWindow.mm Ø 4 AppKit AppKit@0x15d8b0 5 XUL -[GeckoNSApplication sendEvent:] widget/cocoa/nsAppShell.mm Ø 6 AppKit AppKit@0x86b67 7 XUL nsAppShell::Run() widget/cocoa/nsAppShell.mm 8 XUL nsAppStartup::Run() toolkit/components/startup/nsAppStartup.cpp 9 XUL XREMain::XRE_mainRun() toolkit/xre/nsAppRunner.cpp 10 XUL XREMain::XRE_main(int, char**, nsXREAppData const*) toolkit/xre/nsAppRunner.cpp 11 XUL XRE_main toolkit/xre/nsAppRunner.cpp 12 firefox main browser/app/nsBrowserApp.cpp 13 firefox start this os x crash signature seems to have been introduced in firefox 42.0a2. all user comments say it happened while they were trying to log-in to a website with two comments saying they were trying to copy/paste a password into the form. excluding shutdownhangs it's the #2 most frequent crash in 42.0a2 over all and responsible for ~20% of os x crashes at the moment.

This is a long-standing issue, unfortunately our tools can't handle the [ ] characters in the function name (bug 703102) so it always seems like there's no bug on file.

This bug has been fixed on the trunk (mozilla-central, currently the 43 branch). See bug 1148196. Its patch will shortly be uplifted to the 42 branch (aurora, Developer Edition).